1. (adjective) being the only one; single and isolated from others

• lone
• lonesome
• sole
• solitary

2. (adjective) exclusive of anyone or anything else

• alone

3. (adverb) and nothing more

• but
• just
• merely
• simply

4. (adverb) without any others being included or involved

• alone
• entirely
• exclusively
• solely

5. (adverb) never except when

• only if
• only when

1. (adjective) being the only one; single and isolated from others

• single

2. (adjective) exclusive of anyone or anything else

• exclusive

1. (adjective) being the only one; single and isolated from others

• aloneness
• loneliness
• lonesomeness
• solitariness

1. (adverb) and nothing more

• bare
• bare
• mere
• mere
• simple
• simple

2. (adverb) without any others being included or involved

• exclusive
• exclusive
• sole
• sole